Phase Compression Error
Definition
The forensic reporting error of presenting a narrower age range than the reference method's documented accuracy supports, often to satisfy investigative demands for a precise estimate; professionally unjustifiable and potentially misleading to courts.
- Category
- Age estimation reporting error
- Cause
- Reporting a narrower range than the method's validated accuracy
- Common driver
- Pressure for a precise investigative answer
- Consequence
- Misleadingly precise testimony to a court
Common questions
How can an examiner avoid phase compression error in practice?+
By reporting the full validated confidence interval published for the method used, resisting requests to narrow it for investigative convenience, and explicitly stating the interval's basis when testifying.
Why does phase compression undermine the credibility of the estimation method?+
It presents the court with a certainty the underlying research does not support, so if the true age later falls outside the stated narrow range, it damages confidence in the method itself rather than just that one estimate.
Related terms
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- Igarashi Revision
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- Lovejoy Eight-Phase System
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- McKern-Stewart System
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- Suchey-Brooks System
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- Todd System
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